2 Equipment And Initial Hose Operations Flashcards
Minimum engine pump capacity
750 GPM
Minimum water tank capacity
300 gallons
Minimum storage area for 2 1/2 inch or larger firehose
30 ft.³
Area space for each of the two compartments to accommodate inch and a half or larger pre-connected hose lines
3.5 ft.³ each
NFPA 1901 minimum required length for 1.5, 1.75, or 2 inch hose
400 feet
1.5 or 1.75 inch, pre-connects should not exceed which length
250 feet because of friction loss
NFPA 1901 requires which minimum length for 2.5 inch or larger hose
800 feet
Which size hose is recommended for fires that cannot be controlled by smaller attack lines
2.5 inch hose
LDH is what
Supply hose larger than 3.5 inches
NFPA 1142
Standard on water supplies for suburban and rural firefighting
4 inch LDH flows how much more water than 2.5 inch hose of equal length
Almost 3.5 times the capacity
Minimum nozzle requirements carried on pumper apparatus
One combination spray nozzle 200 GPM minimum
Two combination spray nozzles 95 GPM minimum
One play pipe with shut off and 1, 1 1/8 and 1.25 inch tips
Breaking point for hand lanes and streams at 50 PSI for solid stream nozzles
1.25 inch tip
With a 2 1/2 inch hose, 250 gallons per minute at 50 PSI nozzle pressure is produced with which type of solid stream nozzle
Inch and an eighth
Tip sizes usually used on master stream appliances
1.25 to 2 inch
With a spray nozzle in degrees, no greater than what for interior structural operations
30°
Master stream appliance
A portable unit that can be used either mounted on or detached from the pump are capable of immediate application of heavy stream
NFPA 1901 minimum GPM recommendation for master stream
1000 GPM minimum
NFPA 1901 minimum requirement for soft and hard suction hose
Minimum 15 feet of soft suction or 20 feet minimum of hard suction
NFPA 1901
Standard for automotive fire apparatus
Defines requirements for new fire engines
How many 2 1/2 double female and double male adapters with NST are required by NFPA 1901 on an engine
One of each
Minimum NFPA 1901 requirements for ground ladders on engine
One straight letter with roof folks, one extension latter, one attic ladder
If no ladder trucks are in service pump or should be equipped with what type of ladder
35 foot extension ladder
Special circumstances for ladder uses
Ice rescues, bridging incidents, shoring, wasting, damming,
What are the four basic lays for supply line
Forward lay using a charged supply line
Forward lay using an uncharged supply line Direct to fire no line laid or split lay
reverse lay using a charged line
What is a forward lay using a charged supply line
Hydrant to fire, the supply line is immediately charged to the pump
What is a forward lay using it uncharged supply line
Supply line late from the truck at the hydrant to the fire but left uncharged at the hydrant until another company can charge hook up to it
What is direct to fire no line laid
The first pumper arrives directly to the fire scene and lays no supply line
What is a reverse lay using a charged line
The pumper lays the firefighting hose and attack lines at the fire scene can next LDH supply line and lays to the hydrant hooking up and sending water
What are forward lay advantages
Engine is self-sufficient of water supply
Company is for you to take up any position in the front rear side
Another company can drop off its crew take lines off the Forward engine
The large hoseline or pre-connected master stream maybe used almost immediately after arrival
Disadvantages of forward lay
Delay well pump or stops and drops a firefighter at hydrant
Temporary loss of that firefighter remaining at the hydrant until charged
Supply lines being laid may enter letter company access
Advantages of forward uncharged lay
After hose lay entire crew is at fire scene
Disadvantages of forward uncharged lay
Two engine companies tied up
Another company respond from the same direction as the first
To engine company has a to arrive in quick succession
Time delay with radio communication and SOG problems
Direct to fire alternative approach
Second engine lay supply line from first pumper to hydrant
How is direct to fire effective in areas without hydrants
First bumper can work on fire immediately. Second pump or lay supply line from first pumper to nearest water supply, such as pond lake stream or pool
Advantages of direct to fire
First arriving pumper directly to firefighting
Second engine crew use lines off first onece water supply is established
Effective when drafting is needed
Disadvantages of direct to fire
Needs coordination SOG and close arriving companies
Two engines required
Little or no margin of safety with water for attack crew
Advantage of reverse lay charge line
Pumper not position close to fire does not block approach and operation of ladder truck
Reverse lay charged disadvantage
Time consuming
Fire attack equipment removed from pumper before proceeding to hydrant
Pre-pipe master stream appliance
Master stream appliance that has a separate discharge pipe of adequate diameter that runs from fire pump to appliance
Standard equipment requirements for an engine Company are
Basically alike an urban suburban and Burrell
A screw down thread at the end of a solid stream nozzle that allows a smaller line with a inch and a half coupling to be attached is what
Leader line
What is the most desirable how was lay for water supply
Forward lay
